main {
  width: 1000px;
  height: 100vh;
  margin: 0 auto;
  box-sizing: content-box;
  margin-top: 30px;
  article {
    width: 730px;
    background: #fff;
    float: left;
    border: solid 1px #ebe8e8;
    padding: 30px;
    box-sizing: border-box;
    border-radius: 3px;
    h1 {
      font-size: 25px;
      margin-bottom: 30px;
    }
    ul {
      li {
        padding: 15px 0;
      }
    }
  }
  aside {
    width: 250px;
    background: #fff;
    float: right;
    border: solid 1px #eee;
    border-radius: 6px;
    .card-header {
      padding: 15px 20px;
      font-size: 16px;
      border-bottom: solid 1px #ddd;
    }
    .card-body {
      padding: 20px;
      border-bottom: solid 1px #ddd;
    }
    .card-footer {
      padding: 15px 10px;
    }
  }
}
